Mercedes-AMG’s new C63 Coupe has finally been revealed, both in standard form and sportier S trim. The cars share their mechanical package with the C63 sedan but are actually quicker thanks to wider tires and shorter gear ratios. A debut is scheduled for next month’s Frankfurt Auto Show.

The M6 coupe is set to form the basis of BMW’s GT3-spec endurance racer come the 2016 motorsport season. The new M6 GT3 racer will also be shown for the first time at next month’s Frankfurt Auto Show, but you can already get a good look at the car in our latest spy shots.

Yet another vehicle making its debut in Frankfurt will be a wild Bugatti concept designed for the Vision Gran Turismo challenge. Crucially, the new concept is said to preview the design language featuring on Bugatti’s Veyron successor.

You'll find all of these stories and more in today's car news, right here at Motor Authority.